Just wanted to point out that no one seems to talking about the car that sped away from Jane's house right after the explosion.  There was a car speeding away that almost wrecked into Lisbon.  Whoever is driving that car has got to be red john.  I personally believe it has to be Sheriff McAllister since he was right beside Bertram and Smith( the only two that survived the blast).    I can also see it being Partridge.  the first thing partridge says in season 1 episode 1 is "red john enters here".
Also Sheriff McAllister shows up in the second episode so they are my two guesses.